Sash-fastener.



N0. 643,400. Patented" Feb. l3, I900. E. II. CUMSTUCK. SASH FASTENEB.

(Application filed May 20, 1898.)

(No Modl.)

M VENTOTE 11 I ZWESSES YH: NDHRIS PETERS cc. PHDTO-LITHO" wAsmNumN. n.c.

TATES PAENT Fries.

EDGAR M. COMSTOCK, OF YPSILANTI, MICHIGAN.

'SASH-FASTEN ER.

SPECIFICATION forming part of Letters Patent IhIo. 64%,400, datedFebruary I3, 1900.

Application filed m 20, 1898.

T0 all whom it natty concern:

Be it knownthat I, EDGAR M. COMSTOCK, a citizen of the United States,residing at Ypsilanti, county of Washtenaw, State of Michigan, haveinvented a certain new anduseful Improvement in Sash-Fasteners; and Ideclare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itpertains to make and use the same, reference being had to theaccompanying drawings, which form a part of this specification.

This invention relates to sash-fasteners; and it consists in theimprovements hereinafter described, and pointed outin the claims.

In the drawings, Figure l is a perspective of the fastener. Fig. 2indicates the location of the fastener on the window-sash. Fig. 3 is aplan of the fastener with the top part of the inclosing walls removed.This figure shows also the means for releasing the bolt from its detent.Fig. 4c is a plan of the fastener, showing the bolt held back by itsdetent. The cover-wall is removed in this fig ure. Fig. 5 is a plan viewof the lock with the upper part of the case broken away.

The fastener consists of a box, preferably of metal, in which there is asliding bolt B, arranged to be'withdrawn, so that the front end of thebolt is flush with the front wall Z) of the fixture-casing, or to beprojected a distance sufficient to engage in a socket and hold thewindow from being either raised or low may extend to the back wall 5 andthe thumbpiece project through a slot in it.

To the bolt B is secured a parallel bar 6, thatpasses through aperforation in a lug e, and a coiled spring e is interposed between thefront end of the parallel bar 6 and the lug c. The parallel bar servesto aid in holding the bolt B from rotation on its axis and also servesto retain the spring 6 in proper position to constantly press the bolt Bforward to its locking position. There is on the bolt B a spur f, andthere is located within the fixture-casing a lever g, the front end ofwhich is scarfed off and is provided with a hook 9'.

Serial No; 681,178. (No model.)

The rear end extends to the rear end of the casin g and terminates withan actuating-ban; dle 9 In front of the scarfed-off portion of the leverg is a second lever h, which lies athwart the scarfed-off end of thelever g, and this lever 72 is pivoted to the back of the case andextends to the front of the case and through the case, from which itprojects far enough to engage the fixture D, hereinafter mentioned. Ithas a vibratory motion and is capable of actuating the lever g andcausing it to turn on its fulcrum 9 The principal motion of the leverhis in an arc substantially parallel with the path of travel of the bolt13, and it has engagement with the lever 9 when its upper end is thrownbackwardthat is, toward the fulcru m-point of the lever g to cause thefront end of the lever g to move in an are away from the bolt, and thiscauses the disengagement of the catch g with the spur f. These twopartsthe catch g and the spur f- -are brought into holding en gagementby the operator when he draws the bolt back by means of the thumb-piecec and pushes the lever g in a direction to bring about the engagement.On the casing of the window and a short distance above the location ofthe fixture on the sash is secured a fixture D,which slopes or slantsfrom the window-casin g outward and extends into the path of theprotruding end of the lever h, and whenever the window is raised orlowered so as to pass the piece D the piece engages the lever, throwsthe protruding end backward,

and brings about a disengagement between the hook g and the spur f, sothat whenever the window-sash is opened from a fully-closed position oris closed from a position so open that the fixture was above the piece Dthe detent is disengaged and the bolt B will work.

The front end of the bolt B is provided with a friction-wheel 20, whichserves to prevent the sliding engagement between the end of the bolt andthe window-casing and overcomes the abrading effect of the bolt on thecasing.

What I claim is 1. In a sash-fastener, the combination of a locking-boltprovided with a spur, means for actuating the bolt, a lever providedwith a hook arranged to engage the spur on the bolt said lever beingprovided with an actuatinghandle that projects to the outside of theeasing, a part arranged to engage the hooked lever and swing the same,and provided With an end which protrudes to the outside of the 5 case,and a piece, D, adapted to actuate said last-mentioned lever,substantially as described.

2. In a sash-fastener the combination of a bolt, B, adapted to beactuated longitudinally, 10 a spring acting to protrude said bolt, aspur,

f, on said bolt, a lever, 9, approximately parallel to the bolt, 13, andextending from the end of the casing as at, g said lever being providedwith a hook, g, adapted to engage

